67812011 has 2 divisors, whose sum is σ = 67812012. Its totient is φ = 67812010.

The previous prime is 67811993. The next prime is 67812047. The reversal of 67812011 is 11021876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67812011 - 2¹⁰ = 67810987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67812611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33906005 + 33906006.

It is an arithmetic number, because the mean of its divisors is an integer number (33906006).

Almost surely, 2^67812011 is an apocalyptic number.

67812011 is a deficient number, since it is larger than the sum of its proper divisors (1).

67812011 is an equidigital number, since it uses as much as digits as its factorization.

67812011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 67812011 is about 8234.8048550042. The cubic root of 67812011 is about 407.7890325285.

Adding to 67812011 its reverse (11021876), we get a palindrome (78833887).

The spelling of 67812011 in words is "sixty-seven million, eight hundred twelve thousand, eleven".